import { ElementRef, AfterViewInit } from '@angular/core';
import { TabComponent } from './tab.component';
export declare class TabGroupComponent implements AfterViewInit {
    elementRef: ElementRef;
    private _scrollable_element;
    private _tabs;
    selected: number;
    private _onChange;
    constructor(elementRef: ElementRef);
    private _selected;
    private _ready;
    alreadySelectedTabs: Array<number>;
    tabs: Array<TabComponent>;
    button_tabs: Array<TabComponent>;
    ngAfterViewInit(): void;
    readonly offsetTop: number;
    onTabClick(tabIndex: number, event: MouseEvent): void;
    /** Emit an event when clicking in a tab button */
    onTabButtonClick(tab: TabComponent, event: MouseEvent): void;
    select(tabIndex: number): void;
    currentTab(tabIndex?: number): TabComponent;
    alreadySelected(index: number): boolean;
    hasControls(): boolean;
    scrollToPrevTab(): void;
    scrollToNextTab(): void;
    tabTrackByFn(index: number, tab: TabComponent): any;
    private _selectTab;
    private _updateAlreadySelectedTabs;
}
export interface TabChangeEvent {
    tab: TabComponent;
    index: number;
}